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CVE-2026-89855— scsi: qla2xxx: Serialize flash version read in reset handler

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Linux 内核中，已修复以下漏洞： SCSI: qla2xxx：在复位处理函数中串行化闪存版本读取 “不带复位更新缓存版本”的 sysfs 复位操作（0x20261）调用了 函数。该函数用于读取硬件闪存寄存器，但此时并未持有 互斥锁。而 VPD 更新路径会在持有 的情况下串行化相同的调用。因此，该复位路径中的闪存寄存器访问可能与并发的 VPD 或 optrom 闪存操作发生交错，从而导致读取数据损坏。 修复方式： 在调用 时持有 ，使其与 VPD 更新路径保持一致，从而实现串行化访问。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.22% · P11

Possible ATT&CK Techniques 1 AI

T1610 · Deploy Container

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 8c2cf7d4e387d003259488522523807f25576427< f1fc052f2a5890ea6dba80d50254dd6258b13386 affected
8c2cf7d4e387d003259488522523807f25576427< 31bf2714abbb0aa5a8a03d15038f8920e1c74b21 affected
8c2cf7d4e387d003259488522523807f25576427< ae979c549cba684e67b6c047140f3a8d2439b298 affected
8c2cf7d4e387d003259488522523807f25576427< 9cef42a073a0bdeee7fb1b47221cda222d330d2a affected
8c2cf7d4e387d003259488522523807f25576427< 75460967619eda720c9a03767729157ffd171d8c affected
8c2cf7d4e387d003259488522523807f25576427< 8d116137119371349fb09685fe05413d8fc92efe affected
8c2cf7d4e387d003259488522523807f25576427< 33735490789e5417851752974c0b1d23125559cd affected
8c2cf7d4e387d003259488522523807f25576427< f606ed93de0c4f1e7e3618779e9fad731455314a affected
… +10 more rows
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I. Basic Information for CVE-2026-89855

Vulnerability Information
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Vulnerability Title
scsi: qla2xxx: Serialize flash version read in reset handler
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Serialize flash version read in reset handler The "update cache versions without reset" sysfs reset operation (0x20261) calls get_flash_version(), which reads hardware flash registers, without holding ha->optrom_mutex. The VPD update path serializes the same call under optrom_mutex, so this reset path can interleave its flash register accesses with a concurrent VPD or optrom flash operation and corrupt the reads. Hold ha->optrom_mutex across the get_flash_version() call to match the VPD update path.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux 8c2cf7d4e387d003259488522523807f25576427 ~ f1fc052f2a5890ea6dba80d50254dd6258b13386 -
Linux Linux 3.12 -

II. Public POCs for CVE-2026-89855

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III. Intelligence Information for CVE-2026-89855

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Other References for CVE-2026-89855 (8)

Same Patch Batch · Linux · 2026-09-16 · 276 CVEs total

CVE-2026-90048 9.8 CRITICAL fs/ntfs3: fix slab-out-of-bounds write in ni_create_attr_list()
CVE-2026-90012 9.8 CRITICAL spi: Fix DMA mapping ownership on partial map failure
CVE-2026-89970 9.8 CRITICAL nvmet-auth: Synchronize timeout work during SQ teardown
CVE-2026-89857 9.8 CRITICAL scsi: qla2xxx: Hold qpair lock when sending NVMe LS reject
CVE-2026-89969 9.8 CRITICAL nvmet-tcp: fix out-of-bounds write when receiving an over-long PDU
CVE-2026-89847 9.8 CRITICAL scsi: qla2xxx: Avoid double completion in async IOCB timeout
CVE-2026-89972 9.8 CRITICAL nvme: add missing SRCU grace period in error path
CVE-2026-89990 9.8 CRITICAL ceph: lock mutex in ceph_mds_check_access()
CVE-2026-90036 9.8 CRITICAL NFSD: Prevent client use-after-free during blocked-lock reaping
CVE-2026-90038 9.8 CRITICAL NFSD: Prevent client use-after-free during export state revocation
CVE-2026-90037 9.8 CRITICAL NFSD: Prevent client use-after-free during close_lru reaping
CVE-2026-89788 9.8 CRITICAL ksmbd: fix tree connection use-after-free in smb2_tree_connect()
CVE-2026-89783 9.8 CRITICAL xfrm6: fix out-of-bounds write in xfrm6_input_addr() when secpath is full
CVE-2026-90042 9.8 CRITICAL ceph: properly decrypt filenames in vmalloc() buffers
CVE-2026-89778 9.8 CRITICAL isofs: fix out-of-bounds page array access on empty zisofs block
CVE-2026-89915 9.3 CRITICAL KVM: arm64: Remove VM-wide VNCR mapping counter
CVE-2026-90049 9.3 CRITICAL net: skbuff: don't skb_tx_error() the source skb in skb_zerocopy()
CVE-2026-89775 9.3 CRITICAL KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation
CVE-2026-89916 9.3 CRITICAL KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry
CVE-2026-89930 9.3 CRITICAL KVM: nVMX: Service local TLB flushes on failed nested VM-Enter

Showing top 20 of 276 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

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